Apparatus for cleansim the bodies of



(No Model.) 6 Sheets-Sheet 1.

-- 0. ANDRE.

APPARATUS FOR CLEANSING THE BODIES OF FILTERS.

No. 418,148. Patented Dec. 81, 1889.

Witnesses W W/Mr 25 188% 27 N. PETERVS Phcivljllmgmphen Washington D4 Q (No Model.) 6 Sheets-Sheet 2.

I 0. ANDRE. APPARATUS FOR GLBANsING THE BODIES or FILTERS. 110.418.1 18. Patented Dec. 31, 1889.

N. PETERS, Photo-Lilhogruphur, Washingion, n.c.

(No Model.) 6 Sheets-Sheet 3.

v 0. ANDRE. APPARATUS FOR GLBANSING THE BODIES OF FILTERS.

Patented Dec. 31,1889.

Win65 (N0 Mod e1.) v y 6 Sheets-Sheet 4. O. ANDRE. APPARATUS FOR CLEANSING THE BODIES O-F FILTERS. N0. 418,148.

Patented De0.'31, 1889.

Nv PETERS, Phomlltlmgraghen Wahinglun. D- O,

(No Model.) 6 Sheets-Sheet 5.

Y 0. ANDRE. APPARATUS FOR CLEANSING THE BODIES 0F FILTERS.

No. 418,148. Patehted Dec. 31, 1889.

N. PETERS. Fholu-Ulhvgnpher, Waihingian. mt;

(No Model.) 6 Sheets-Sheet 6.

0. ANDRE.

APPARATUS FOR CLEANSING THE BODIES OF FILTERS.

110.418.1 18. Patented Dec. 31, 1889.

UNITED STATES? PATENT OFFICE.

OSCAR ANDRE, or PARIS, FRANCE.

APPARATUS FOR CLEANSING THE BODIES OF FILTERS.

SPECIFICATION forming part of Letters Patent No. 418,148, dated. December 31, 1889.

Application filed June 7, 1889- Serial No. 313,432. (No model.) Patented in France May 1, 1888, No. 190,325, and February 23,

1889; in England April 27, 1889, No. 7,050, and in Germany May 4, 1889.

To all whom it may concern.-

Be it known that I, OSCAR ANDRE, engineer, a citizen of the Republic of France, residing in the city of Paris, France, have invented certain new and useful Apparatus for Cleaning the Filtering-Bodies of Chamberland and other Similar Filters, (for which I have obtained Letters Patent in France, dated May 1, 1888, No. 190,325, and an addition thereto dated February 23, 1889, and for whichI have filed applications for patents in Great Britain, April 27, 1889, No. 7,050, and in Germany May 4, 1889,) of which the following is a specification.

The rapid clogging of the filtering-surfaces has created serious difficulties in the practical employment of the Ohamberland and other similar filters for considerable amounts of water. Moreoveigit is aca'use of complication of the filtering of fermented liquors and the like.

The cleaning by machinery or by hand of numerous and brittle filtering-bodies is-a long and costly operation, and besides it is seldom reliable.

My improvements consist of an apparatus for cleaning the filtering-bodies of filters, such as the Ohamberland and other filters.

The process consists in employing water under pressure as a means for cleaning. The water is projected in fine jets against the clogged filtering-bodies,whereby the sediments thereto adhering are removed without in any wayaifecting or injuring the filteringwater, or steam or another fluid, to circulate bodies. This cleaning operation can be facilitated by causingwater, preferably filtered through the filtering-bodies from the inside successive, or combined.

zontal motion alone will be sufficient; and if the water is to be dealt with sparingly, then a vertical motion combined with a rotary motion will be necessary.

In order that my improvements may be clearly understood, I shall describe them in detail in reference to the accompanying drawings, in which Figures 1, 2, 3, and 4 show an apparatus in accordance with afirst arrangement under my invention, while Figs. 5 and 6 are a modification thereof. Fig. 1, Sheet 1, an elevation. Fig. 2, Sheet 2, is a sectional elevation. Fig. 3, Sheet 3, is a sectional plan of Fig. 2. Fig. 4, Sheet 4, is a partial elevation similar to Fig. 2, but at right angles thereto-that is to say, a section through A A of Fig. 3.

a is a vessel closed at the top by a bolted cover I).

c c is the base, and d is a hollow axis leading therefrom. The base 0 comprises a chamber 0, into which leads an inlet-pipe f for the water under pressure to be filtered.

g is'a door which closes a'holc in the base 0, through which thev chamber 6 can be inspected or cleaned. Across the top of the chamber 6 is laid a frame-work or a grate connected to a fine wire-cloth h, the purpose of which is to retain the coarse impurities which might getinto the vessel a and impede the action of theiapparatus.

WVithin the vessel 0, are a series of circularly-bent pipes i, which rest upon radiating horizontal supports j. The filteringbodies 7c are connected to the pipes i by means of nozzles l, secured to the latterpand of lengths of rubber piping m. The said bodies '70 are held vertically by means of connecting-rings a. Each of the series of circularly-bent pipes 2' communicates with a collecting-pipe 0, Figs. 1 and 4, common to all the pipes 2', by means of short pipes p, Figs. 1, 3, and 4, passing through the bottom of the vessel a, any suitable meansbeing resorted to for forming a tight joint. The collector 0 receives the filtered water, which may be led or forced to any desired place. v i

The cleaning apparatus is formed of 'a T- shaped tube q, the vertical branch of which enters the hollow axis cl, after first passing too.

through an annular cap 7", acting as a guide for the said branch.

suitable plug 2.

s is a cup leather for insuring a watertight joint in the usual manner. The bottom end of the vertical branch of the T- shaped tube q is open, and at some distance from the said end are several holes 25, the aggregate area of which is equal to the crosssectional area of the said tube (1. The horizontal branch of the T shaped tube q is somewhat shorter than the internal diameter of the vessel or, and is closed at each end by a plug a, screwed or otherwise secured. In a line with the vertical branch of the tube q is connected a screw-threaded rod 1;, which engages a stationary nut w, secured to the cover 6 of the vessel. The screw-threaded rod has a long groove as, into which engages a key (not shown) fastened to a worm-wheel y, which engages the screw-threaded rod 12, and which receives its motion from a worm (not shown) fastened on the driving-shaft z, worked by an ordinary handle. The T-shaped tube has connected to it a series of pending tubes 1, the lower ends of which are closed by any Each plug has two or more holes of such a size, shape, and direction as to, project the water to all points of the circumference of each filtering-body 1c.

3 is a pressure-gage, and4 is a valve for letting air into the apparatus and closing the latter when full of water. I

The operation is as follows: Rotary motion is imparted to the driving-shaft z, so as to cause, by means of the intermediate parts y,

w, and o, the T-shaped pipe (1 to turn and to rise simultaneously until the bottom of the screw-threaded rod '0 strikes against the under face of the nut 10. The cock f the inlet-pipe f is opened and the valve 4 is likewise opened. The water to be filtered rushes into the chamber 2, rises into the hollow axis a by issuing through the holes 15 of the vertical branch of the T-shaped pipe q, the said holes being over and above the top face of the hollow axis (1, as shown in dotted lines in Fig. 2. As soon as the apparatus is filled with water the valve 4' rises and closes automatically. Thereupon the wateris forced through the filtering-bodies 7c andis filtered. The filtered water trickles down inside of the filteringcharge-pipe 6 is opened and the water con,-

tained in the apparatus flows out, air being allowed to enter through the valve 4-. As soon as the apparatus is empty the cock of thedi's'charge-pipe 6 is closed and the cock 5 'is again opened, and at the same time the clegg ingapparatusis set in motion by means I the filtering-bodies.

of the handle, connected to the drivingshaft z. The vertical branch of the T-shaped tube q begins to descend and its holes 73 move into the cup-leather s and gradually into the hollow axis cl, whereby the unfiltered water supplied from the inlet-pipe f cannot any longer enter the vessel a, but is obliged to seek another c0urse-viz., the inside of the vertical and horizontal branches of the tube q and into the pending tubes 1, from which the water under pressure is projected in the shape of jets, which strike the filtering-bodies k and remove therefrom the sediments crimpuritieswhich have gathered thereon. When If desired, or if the filter has been operating on liquids which leave a sediment of a viscous character upon the surface of the filtering-bodies, the cleaning operation can be facilitated by causing, at the same time as the cleaning apparatus is acting, water to be forced through the filtering-bodies from the inside .to the outside, so as to aid in detaching the impurities from the outer surface of I The said water, which should preferablybe filtered water, can be taken from the collecting-pipe 0 and be made to fill a reservoir 7, Fig. 4, provided with a pipe 8 and cock 9. The reservoir7 should be placed at a sufficientlyv high level to yield the requisite head or pressure and find its way through the thickness of the filtering-bodies from the inside to the outside. (1, and finds itsway into the inside of the vessel J ustbefore proceeding to clean the. filterlecting-pipe 0 is closed and the cock 9 is.

opened, whereby the reservoir 7 soon gets filled with water. full, the cleaning operation is proceeded with as formerly.

When the reservoir 7 is In case the water to be filtered should enter insufficient for projecting the jets of water with the required force for cleaning the filtering-bodies, then a force pump of any suitable kind can be used for effecting the cleaning operation. In such case the base 0 would have an extra opening (not shown) for connecting the pipe by which the water is forced from the pump.

Figs. 5 and 6 show a modification of the apparatus differing from the arrangement shown in Figs. 1, 2, 3, and et'in this, that instead of filtering by pressure the filtering-operation is effected by suction. elevation in section on the line B B, Fig. 6-,

Fig. 5 is an and Fig. 6 is a plan in section of Fig, 5. In

this modification a suction-pump draws the liquid to be filtered through the filteringbodies 70, and the filtered water of all the said bodies 70 enters the circularly-bent pipes 2', which, instead of resting on supports, as in Fig. 2, are held up by supports 10 1O 1O l0 and by means of pipes 19 p p p, acting like wise as supports and leading-into the collecting-pipe o, to which the suction-pump is 'connected. The cleaning apparatus is substantially the same as the one previously described, and need not be again described.

11 is the inlet for the water to be filtered, and 12 is the inlet for the waterto be used for the cleaning operation.

13, Fig. 6, is the opening at the bottom of the vessel a, to which is connected the discharge-pipe. (Not shown.)

The vertical branch of the T-shaped pipe (1, guided by the hollow axis d, receives the water from the inlet 12, which water does not, as in the foregoing arrangement, issue by holes 13 into the inside of the apparatus. It will likewise be understood that the cleaning operation can in this modification also be assisted by forcing water through the filteringbodies from the inside to the outside. This may be eflect-ed by forcing filtered water or other liquid through the suction-pipe 0. If the amount of water under pressure is considerable, the number of holes in the pending tubes 1 may be increased and extend over the whole length of the said tube, if desired, in which latter case the cleaning apparatus need but receive a rotary motion alone.

In other respects the apparatus shown in Figs. 5 and 6 is substantially the same as that shown in Figs. 1, 2, 3, and 4.

The apparatus may be made in the shape of a half or quarter circle instead of having the shape of a cylindrical body.

The circularly-bent pipe t' can be cleaned by being removed from the inside of the apparatus and then dipped into acidulated water. The filtering bodies 70 may likewise have boiling water or acidulated water projected against them while in the apparatus.

I claim 1. The combination,'for cleaning the filtertug-bodies is, arranged in concentric series, of the system of perforated tubes 1, pendent from a horizontal pipe q, said tubes and pipe being adapted to revolve and also to rise simultaneously, as and for the purposes set forth.

2. In combination with the base (1, its cupleather 8, and cap 0", the T-shaped tube q, carrying the perforated tubes 1 and provided with the holes 15, for the purpose set forth, and fitted Water-tight in the base, all as set forth.

3. In combination, the concentric rows of filtering-bodies 76, secured to concentric rows of pipes i, as set forth, a common collector 0, into which said concentric rows discharge, and a cleaning device adapted to be moved between the concentric rows, all substantially as set forth.

In witness whereof I have hereunto signe my name in the presence of two subscribing witnesses.

o. ANDRE.

Witnesses:

R. H. BRANDON, (3. BLUNDELL. 

